From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: lsf-pc@lists.linux-foundation.org
Cc: linux-mm <linux-mm@kvack.org>
Subject: Re: [LSF/MM/BPF TOPIC] Waste-Free Per-CPU Userspace Memory Allocation
Date: Tue, 8 Apr 2025 10:29:42 -0400 [thread overview]
Message-ID: <55092962-f65d-457b-ad91-64f8e3430b33@efficios.com> (raw)
In-Reply-To: <e5bb2190-2688-4491-9d17-574ff925f239@efficios.com>
On 2025-01-28 10:23, Mathieu Desnoyers wrote:
> Hi,
>
> I submit this topic proposal for your consideration:
>
> Introduce the librseq per-CPU user-space memory allocator. It implements
> concepts similar to the Linux kernel percpu allocator in userspace, and
> thus reduces waste of per-CPU data structures hot cache lines by
> eliminating padding usually required to eliminate false-sharing, and in
> addition tackles issues that arise from resident memory waste when
> restricting processes with scheduler affinity or cpusets.
>
> It allows prototyping kernel algorithms within the safe limits of
> user-space.
>
> I hope gathering feedback from MM experts about shortcomings of the
> proposed approach.
Here are the slides I presented during my talk:
https://drive.google.com/file/d/1DWOP6lfbqvYyJ1puwlADoUS9UNQ64SAw/view?usp=sharing
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
prev parent reply other threads:[~2025-04-08 14:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-28 15:23 Mathieu Desnoyers
2025-04-08 14:29 ` Mathieu Desnoyers [this message]
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